FEL2012 - List of Authors (Braun, H.-H.)

Paper

Title

Page

SwissFEL, the X-ray Free Electron Laser at PSI

9

H.-H. Braun
PSI, Villigen PSI, Switzerland

PSI prepares the construction of an X-ray free electron laser, SwissFEL, as its next major research facility. The baseline design consists of a 5.8 GeV linear accelerator and two FEL lines covering the wavelength range from 0.1-0.7nm and 0.7-70nm, respectively. SwissFEL features a linear accelerator in C-band technology, a novel design of variable gap in-vacuum undulators for the hard X-ray FEL and Apple II undulators with full polarization control for the soft X-ray FEL. The two FELs are operated independently and simultaneously with 100 Hz pulse rate each. In addition to the FEL performance goals SwissFEL aims for a low overall energy consumption. Linac parameters as well as the cooling systems are optimized towards this goal. For the whole facility a staged construction is planned, with groundbreaking in spring 2013 and the commissioning of the linear accelerator and the hard X-ray FEL starting in 2016. An overview of SwissFEL goals, status and plans is given and the SwissFEL R&D activities are reviewed.

Slides MOOB04 [4.194 MB]

THPD19

Technical Overview of SwissFEL Undulator Line

583

R. Ganter, M. Aiba, H.-H. Braun, C. Calvi, A. Fuchs, P. Heimgartner, E. Hohmann, R. Ischebeck, H. Jöhri, B. Keil, N. Milas, M. Negrazus, S. Reiche, S. Sanfilippo, T. Schmidt, S. Sidorov, P. Wiegand
PSI, Villigen PSI, Switzerland

Starting after Linac 3 at z ~ 430 m (z = 0 being the gun photocathode position), the so-called Aramis Hard-X ray undulator section extends over 170 m, from the energy collimator to the electron beam dump. Electrons enter the undulator section with a maximum energy of 5.8 GeV, a slice emittance below 0.43 μm and a peak current of 3 kA with 200 pC of charge. A prototype of the in-vacuum undulator (U15) is currently under assembly. Most of the other beamline components have been designed and for some of them prototypes are already ordered (quadrupoles, beam position monitors, phase shifters, alignment quadrupoles; mechanical supports; safety components). The paper will describe how constraints like temperature drifts, stray magnetic field, wakefields, beam losses, costs are taken into account for the design of components and building (undulators are however described in details in a companion paper).

Paper	Title	Page
MOOB04	SwissFEL, the X-ray Free Electron Laser at PSI	9
	H.-H. Braun PSI, Villigen PSI, Switzerland
	PSI prepares the construction of an X-ray free electron laser, SwissFEL, as its next major research facility. The baseline design consists of a 5.8 GeV linear accelerator and two FEL lines covering the wavelength range from 0.1-0.7nm and 0.7-70nm, respectively. SwissFEL features a linear accelerator in C-band technology, a novel design of variable gap in-vacuum undulators for the hard X-ray FEL and Apple II undulators with full polarization control for the soft X-ray FEL. The two FELs are operated independently and simultaneously with 100 Hz pulse rate each. In addition to the FEL performance goals SwissFEL aims for a low overall energy consumption. Linac parameters as well as the cooling systems are optimized towards this goal. For the whole facility a staged construction is planned, with groundbreaking in spring 2013 and the commissioning of the linear accelerator and the hard X-ray FEL starting in 2016. An overview of SwissFEL goals, status and plans is given and the SwissFEL R&D activities are reviewed.
	Slides MOOB04 [4.194 MB]

THPD19	Technical Overview of SwissFEL Undulator Line	583
	R. Ganter, M. Aiba, H.-H. Braun, C. Calvi, A. Fuchs, P. Heimgartner, E. Hohmann, R. Ischebeck, H. Jöhri, B. Keil, N. Milas, M. Negrazus, S. Reiche, S. Sanfilippo, T. Schmidt, S. Sidorov, P. Wiegand PSI, Villigen PSI, Switzerland
	Starting after Linac 3 at z ~ 430 m (z = 0 being the gun photocathode position), the so-called Aramis Hard-X ray undulator section extends over 170 m, from the energy collimator to the electron beam dump. Electrons enter the undulator section with a maximum energy of 5.8 GeV, a slice emittance below 0.43 μm and a peak current of 3 kA with 200 pC of charge. A prototype of the in-vacuum undulator (U15) is currently under assembly. Most of the other beamline components have been designed and for some of them prototypes are already ordered (quadrupoles, beam position monitors, phase shifters, alignment quadrupoles; mechanical supports; safety components). The paper will describe how constraints like temperature drifts, stray magnetic field, wakefields, beam losses, costs are taken into account for the design of components and building (undulators are however described in details in a companion paper).